Adafruit 13.56MHz RFID/NFC Clear Keychain Fob - Classic 1K

This blank 13.56MHz RFID/NFC keychain fob offers a simple, reliable way to tag and manage items. Equipped with a small RFID chip and antenna, it passively powers up when placed near a compatible reader/writer.

Compatible with most 13.56MHz RFID/NFC readers, it conforms to the ISO/IEC 14443 Type A standard. Ensure your reader supports this standard. Ideal integration with the PN532 NFC/RFID breakout board and Adafruit NFC/RFID Shield for Arduino enhances functionality.

The fob's writable EEPROM stores up to 1 KB of data across multiple banks, enduring over 100,000 rewrite cycles. Utilize the permanent 4-byte ID for secure identification, as this ID is immutable.

Though perfect for projects requiring durable tagging solutions, note that since 2014, newer phones might not support this older NFC chipset involvement. Therefore, phone compatibility is limited.